Nissan Pathfinder (2011 year). Manual — part 318
EC-598
< BASIC INSPECTION >
[VK56DE]
HOW TO SET SRT CODE
Always drive the vehicle in safe manner according to traffic conditions and obey all traffic laws.
*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal
and keep it released for more than 10 seconds. Depress the accelerator pedal until vehicle speed is 90 km/h
(56 MPH) again.
*2: Checking the vehicle speed with GST is advised.
• The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driving
habits, etc.
Zone A refers to the range where the time, required for the diagnosis under normal conditions*, is the short-
est.
PBIB3622E
2011 Pathfinder
HOW TO SET SRT CODE
EC-599
< BASIC INSPECTION >
[VK56DE]
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Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not completed within
zone A.
*: Normal conditions refer to the following:
• Sea level
• Flat road
• Ambient air temperature: 20 - 30
°
C (68 - 86
°
F)
• Diagnosis is performed as quickly as possible under normal conditions.
Under different conditions [For example: ambient air temperature other than 20 - 30
°
C (68 - 86
°
F)], diagno-
sis may also be performed.
Work Procedure
INFOID:0000000006568909
1.
CHECK DTC
Check DTC.
Is any DTC detected?
YES
>> Repair malfunction(s) and erase DTC. Refer to
.
NO
>> GO TO 2.
2.
CHECK SRT STATUS
WITH CONSULT-III
Select “SRT STATUS” in “DTC & SRT CONFIRMATION” mode with CONSULT-III.
WITHOUT CONSULT-III
Perform “SRT status” mode with
EC-527, "On Board Diagnosis Function"
.
WITH GST
Select Service $01 with GST.
Is SRT code(s) set?
YES
>> END
NO-1 >> With CONSULT-III: GO TO 3.
NO-2 >> Without CONSULT-III: GO TO 4.
3.
DTC CONFIRMATION PROCEDURE
1. Select “SRT WORK SUPPORT” in “DTC & SRT CONFIRMATION” mode with CONSULT-III.
2. For SRT(s) that is not set, perform the corresponding “DTC CONFIRMATION PROCEDURE” according to
the “Performance Priority” in the “SRT ITEM” table. Refer to
.
3. Check DTC.
Is any DTC detected?
YES
>> Repair malfunction(s) and erase DTC. Refer to
.
NO
>> GO TO 9.
4.
PERFORM ROAD TEST
• Check the “Performance Priority” in the “SRT ITEM” table. Refer to
• Perform the most efficient SRT set driving pattern to set the SRT properly. Refer to
.
In order to set all SRTs, the SRT set driving pattern must be performed at least once.
>> GO TO 5.
5.
PATTERN 1
1. Check the vehicle condition;
-
Engine coolant temperature is
−
10 to 35
°
C (14 to 95
°
F).
-
Fuel tank temperature is more than 0
°
C (32
°
F).
2. Start the engine.
3. Keep engine idling until the engine coolant temperature is greater than 70
°
C (158
°
F)
NOTE:
ECM terminal voltage is follows;
• Engine coolant temperature
-
−
10 to 35
°
C (14 to 95
°
F): 3.0 - 4.3 V
- 70
°
(158
°
F): Less than 1.4 V
2011 Pathfinder
EC-600
< BASIC INSPECTION >
[VK56DE]
HOW TO SET SRT CODE
• Fuel tank temperature: Less than 4.1 V
EC-541, "ECM Terminal and Reference Value"
>> GO TO 6.
6.
PATTERN 2
1. Drive the vehicle. And depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then
release the accelerator pedal and keep it released for more than 10 seconds.
2. Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH) again
NOTE:
• Checking the vehicle speed with GST is advised.
• When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted.
In this case, the time required for diagnosis may be extended.
>> GO TO 7.
7.
PATTERN 3
• Operate vehicle following the driving pattern shown in the figure.
• Release the accelerator pedal during deceleration of vehicle speed
from 90 km/h (56 MPH) to 0 km/h (0 MPH).
>> GO TO 8.
8.
PATTERN 4
• The accelerator pedal must be held very steady during steady-state driving.
• If the accelerator pedal is moved, the test must be conducted again.
>> GO TO 9.
9.
CHECK SRT STATUS
WITH CONSULT-III
Select “SRT STATUS” in “DTC & SRT CONFIRMATION” mode with CONSULT-III.
WITHOUT CONSULT-III
Perform “SRT status” mode with
EC-527, "On Board Diagnosis Function"
WITH GST
Select Service $01 with GST.
Is SRT(s) set?
YES
>> END
NO
>> Call TECH LINE or take appropriate action.
PBIB2244E
2011 Pathfinder
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-601
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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DTC/CIRCUIT DIAGNOSIS
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Description
INFOID:0000000006244232
The specification (SP) value indicates the tolerance of the value that is displayed in “SPEC” of “DATA MONI-
TOR” mode of CONSULT-III during normal operation of the Engine Control System. When the value in “SPEC”
of “DATA MONITOR” mode is within the SP value, the Engine Control System is confirmed OK. When the
value in “SPEC” of “DATA MONITOR” mode is NOT within the SP value, the Engine Control System may have
one or more malfunctions.
The SP value is used to detect malfunctions that may affect the Engine Control System, but will not illuminate
the MIL.
The SP value will be displayed for the following three items:
• B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board correc-
tion)
• A/F ALPHA-B1/B2 (The mean value of air-fuel ratio feedback correction factor per cycle)
• MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)
Testing Condition
INFOID:0000000006244233
• Vehicle driven distance: More than 5,000 km (3,107 miles)
• Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm
2
, 14.25 - 15.12 psi)
• Atmospheric temperature: 20 - 30
°
C (68 - 86
°
F)
• Engine coolant temperature: 75 - 95
°
C (167 - 203
°
F)
• Engine speed: Idle
• Transmission: Warmed-up
- After the engine is warmed up to normal operating temperature, drive vehicle until “ATF TEMP SE 1” (A/T
fluid temperature sensor signal) indicates more than 60
°
C (140
°
F).
• Electrical load: Not applied
- Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight
ahead.
Inspection Procedure
INFOID:0000000006244234
NOTE:
Perform “SPEC” in “DATA MONITOR” mode in maximum scale display.
1. Perform
2. Check that the testing conditions indicated above are met.
3. Select “B/FUEL SCHDL”, “A/F ALPHA-B1”, “A/F ALPHA-B2” and “MAS A/F SE-B1” in “SPEC” of “DATA
MONITOR” mode with CONSULT-III.
4. Check that monitor items are within the SP value.
5. If NG, go to
2011 Pathfinder
EC-602
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Diagnosis Procedure
INFOID:0000000006244235
OVERALL SEQUENCE
JMBIA1468GB
2011 Pathfinder
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-603
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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DETAILED PROCEDURE
1.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Check that the testing conditions are met. Refer to
3. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each
indication is within the SP value.
NOTE:
PBIB3214E
2011 Pathfinder
E
C
- 6 0 4
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Check “A/F ALPHA-B1”, “A/F ALPHA-B2” for approximately 1 minute because they may fluctuate. It is NG
if the indication is out of the SP value even a little.
OK or NG
OK
>> GO TO 17.
NG (Less than the SP value)>>GO TO 2.
NG (More than the SP value)>>GO TO 3.
2.
CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and check that the indication is within the SP
value.
OK or NG
OK
>> GO TO 4.
NG (More than the SP value)>>GO TO 19.
3.
CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and check that the indication is within the SP
value.
OK or NG
OK
>> GO TO 6.
NG (More than the SP value)>>GO TO 6.
NG (Less than the SP value)>>GO TO 25.
4.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Stop the engine.
2. Disconnect PCV hose, and then plug it.
3. Start engine.
4. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each
indication is within the SP value.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 6.
5.
CHANGE ENGINE OIL
1. Stop the engine.
2. Change engine oil.
NOTE:
This symptom may occur when a large amount of gasoline is mixed with engine oil because of driving
conditions (such as when engine oil temperature does not rise enough since a journey distance is too
short during winter). The symptom will not be detected after changing engine oil or changing driving con-
ditions.
>>
INSPECTION END
6.
CHECK FUEL PRESSURE
Check fuel pressure. (Refer to
OK or NG
OK
>> GO TO 9.
NG (Fuel pressure is too high)>>Replace “fuel level sensor unit, fuel filter and fuel pump assembly”, refer to
, and then GO TO 8.
NG (Fuel pressure is too low)>>GO TO 7.
7.
DETECT MALFUNCTIONING PART
1. Check the following.
-
Clogged and bent fuel hose and fuel tube
-
Clogged fuel filter
-
Fuel pump and its circuit (Refer to
2. If NG, repair or replace the malfunctioning part. (Refer to
If OK, replace “fuel level sensor unit, fuel filter and fuel pump assembly”. Refer to
.
2011 Pathfinder
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-605
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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>> GO TO 8.
8.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each
indication is within the SP value.
OK or NG
OK
>>
INSPECTION END
NG
>> GO TO 9.
9.
PERFORM POWER BALANCE TEST
1. Perform “POWER BALANCE” in “ACTIVE TEST” mode.
2. Check that each cylinder produces a momentary engine speed drop.
OK or NG
OK
>> GO TO 12.
NG
>> GO TO 10.
10.
DETECT MALFUNCTIONING PART
1. Check the following below.
-
Ignition coil and its circuit (Refer to
-
Fuel injector and its circuit (Refer to
-
Intake air leakage
-
Low compression pressure (Refer to
EM-163, "Compression Pressure"
2. If NG, repair or replace the malfunctioning part.
If OK, replace malfunctioning fuel injector. (It may be caused by leakage from fuel injector or clogging.)
>> GO TO 11.
11.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each
indication is within the SP value.
OK or NG
OK
>>
INSPECTION END
NG
>> GO TO 12.
12.
CHECK A/F SENSOR 1 FUNCTION
Perform all DTC Confirmation Procedure related with A/F sensor 1.
• For DTC P0130, P0150, refer to
EC-665, "DTC Confirmation Procedure"
.
• For DTC P0131, P0151, refer to
EC-669, "DTC Confirmation Procedure"
.
• For DTC P0132, P0152, refer to
EC-673, "DTC Confirmation Procedure"
.
• For DTC P0133, P0153, refer to
EC-677, "DTC Confirmation Procedure"
.
• For DTC P2A00, P2A03, refer to
EC-897, "DTC Confirmation Procedure"
OK or NG
OK
>> GO TO 15.
NG
>> GO TO 13.
13.
CHECK A/F SENSOR 1 CIRCUIT
Perform Diagnostic Procedure according to corresponding DTC.
>> GO TO 14.
14.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each
indication is within the SP value.
OK or NG
2011 Pathfinder
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